get geico. fifteen minutes could save you fifteen percent or more. >> announcer: "rock 'n' royalty: billboard's all-stars" continues. >> reporter: this year, justin bieber has been taking his music on a grand tour "all around the world." ♪ at just 19, justin has been raking up some impressive numbers. 15 million albums sold, over 39 million twitter followers, and in the social media age, justin seems to offer every detail of his life to his eager "beliebers" through books, tv shows, films, and of course, online. case in point, his recent instagram photo with ex-girlfriend selena gomez, or according to this photo, maybe not ex? but for the past few months, all this intense scrutiny has exposed some seemingly bizarre behavior. >> [ bleep ]. what did you say? >> he's literally having his michael jackson "leave me alone" moment. >> reporter: there was the instagram photos of the pet monkey bieber brought to munich, only to have it confiscated by german authorities. >> if that monkey stays ingermae